| 土柱变密度溶质运移试验推求水平及垂直方向弥散度研究 |
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| 引用本文： | 程勤波,陈喜,张志才,张润润,高满,丘宁,黄日超. 土柱变密度溶质运移试验推求水平及垂直方向弥散度研究[J]. 水文, 2018, 38(6): 1-6 |
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| 作者姓名： | 程勤波 陈喜 张志才 张润润 高满 丘宁 黄日超 |
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| 作者单位： | 1.河海大学水文水资源与水利工程科学国家重点实验室2.河海大学水文水资源学院 |
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| 基金项目： | 江苏省自然科学基金项目(BK20150809)；国家自然科学基金青年基金项目(41601013);国家自然科学基金重大项目(41571130071);国家自然科学基金面上项目(41771025)； |
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| 摘 要： | 基于溶质运移对流弥散理论的变密度海水入侵模型广泛用于海水入侵研究,而水动力弥散系数是影响模型模拟效果的关键性参量之一。利用传统土柱溶质运移试验结合旁侧抽水,采用数值反演法成功获取了水平及垂直两方向弥散度。相对于传统方法,在不增加试验复杂度的前提下,同时推求了不同方向的弥散度,提高了试验效率,节约了试验成本,可广泛用于测定水动力弥散系数等参数。
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| 关 键 词： | 变密度；海水入侵；弥散度；各向异性；数值反演 |
| 收稿时间： | 2017-09-28 |
Estimation of Horizontal and Vertical Dispersivity Based on Soil Column Solute Transport Experiment |
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| CHENG Qinbo,CHEN Xi,ZHANG Zhicai,ZHANG Runrun,GAO Man,QIU Ning,HUANG Richao. Estimation of Horizontal and Vertical Dispersivity Based on Soil Column Solute Transport Experiment[J]. Hydrology, 2018, 38(6): 1-6 |
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| Authors: | CHENG Qinbo CHEN Xi ZHANG Zhicai ZHANG Runrun GAO Man QIU Ning HUANG Richao |
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| Affiliation: | 1. State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;2. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China |
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| Abstract: | The variable-density solute transport model based on the Advection-Dispersion Equation is widely used to study theseawater intrusion. And the hydraulic dispersion coefficient significantly affects the model simulation performance. This paperadded side pumping tests into traditional soil column solute transport experiment, and utilized numerical inversion method toestimate the horizontal and vertical dispersivity. The estimated result was verified by applying other solute transport test. Comparedwith traditional method, this method can estimate the dispersivity in different directions on the premise that we do notincrease the experimental complexity, which improves the efficiency and saves the cost of experiment. The approach providedby this study can be widely used to estimate the anisotropy of hydraulic parameters, such as conductivity and dispersion coefficient. |
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